Marginal Bone Loss at Implants: A Retrospective, Long-Term Follow-Up of Turned Brånemark System® Implants

The purpose of this multicenter randomized controlled trial was to compare the clinical, radiographic, and patient-centered outcomes of early loaded mandibular overdentures deliberately placed on two or three implants. The outcomes were: implant and prosthesis success and survival rates; biological and technical complications; marginal bone loss; patient satisfaction; and periodontal parameters. The results showed no differences between the groups in any of the outcomes analyzed. With the limitations of the present study, and looking at long-term follow-up, the gold standard of prosthetic rehabilitations with attachments, in agreement with the scientific community, should prefer two non-splinted implants.

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Immediate Loading of Implants Placed by Guided Surgery in Geriatric Edentulous Mandible Patients

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18084125 ◽

2021 ◽

Vol 18 (8) ◽

pp. 4125

Author(s):

Eugenio Velasco-Ortega ◽

Alvaro Jiménez-Guerra ◽

Ivan Ortiz-Garcia ◽

Jesús Moreno-Muñoz ◽

Enrique Núñez-Márquez ◽

...

Keyword(s):

Bone Loss ◽

Clinical Outcomes ◽

Previous History ◽

Immediate Loading ◽

Marginal Bone Loss ◽

Guided Surgery ◽

Edentulous Mandible ◽

Long Term Follow Up ◽

History Of

The aim of this study was to show the clinical outcomes of the immediate loading of implants inserted by guided surgery in edentulous mandible patients. Edentulous mandible patients were diagnosed with oral examination, cone beam computerized tomography and diagnostic casts for intermaxillary relations and treated with 8–10 implants for rehabilitation with guided surgery and immediate loading. After flapless surgery, implants were loaded with an immediate acrylic temporary prosthesis. After a period of six months, a ceramic definitive full-arch prosthesis was placed. A total of 22 patients (12 females and 10 males) were treated with 198 implants. Eleven patients (50%) had a previous history of periodontitis. Six patients (27.3%) were smokers. The follow-up was 84.2 ± 4.9 months. Clinical outcomes showed a global success rate of 97.5% of implants. Five implants were lost during the healing phase with provisional prosthesis. Twenty-two fixed full-arch rehabilitations were placed in the patients over the 193 remaining implants. Mean marginal bone loss was 1.44 mm ± 0.45 mm. Six patients (27.3%) showed some kind of mechanical prosthodontic complication. Eighteen (9.3%) of the 193 remaining implants were associated with peri-implantitis. The antecedents of peri-implantitis are critical elements for the survival of the implants. The loss of implants was significant in patients who smoked up to 10 cigarettes, compared to non-smokers. Peri-implantitis is one of the key elements in the long-term follow-up of implants and it was more manifest in smoking patients, and in those with a history of peri-implantitis. Marginal bone loss was more significant in smokers. Full-arch rehabilitation is presented as a predictable alternative with minor fatigue problems that are easily solvable.

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Rehabilitation of the Completely Edentulous Mandible by All-on-Four Treatment Concept: A Retrospective Cohort Study with Up to 10 Years Follow-Up

Medicina ◽

10.3390/medicina58010010 ◽

2021 ◽

Vol 58 (1) ◽

pp. 10

Author(s):

Tommaso Grandi ◽

Luca Signorini

Keyword(s):

Survival Rate ◽

Bone Loss ◽

Treatment Concept ◽

Marginal Bone Loss ◽

Mechanical Complications ◽

Prosthesis Survival ◽

Edentulous Mandible ◽

Significant Difference

(1) Background and Objectives. Currently, there are no definitive long-term data about clinically significant difference in the failure of prosthesis and implant or marginal bone loss related to the rehabilitation of the completely edentulous mandible by all-on-four treatment concept. The main aim of present investigation was to report the long-term outcomes (10-years follow-up) of complete-arch mandibular rehabilitations based on the all-on-four concept. (2) Materials and Methods. Patients in need of extractions of teeth due to the occurrence of caries and/or severe periodontal disease and patients presented with edentulous mandibles were enrolled to the study. A total of 96 participants (mean follow-up period after intervention of 3185.2 days) were enrolled in the study. Participants were evaluated at the first visit, 10 days after intervention and every year after the intervention. Implant and prosthesis survival, bone loss and both local biological and mechanical complications were evaluated during the follow-up period. (3) Results. An implants’ survival rate of 97.9% was observed at the end of the follow-up period. Biological complications were reported in 19.8% of patients, whereas mechanical complications were reported in 27.1% of cases. The average marginal bone level at baseline was −0.03 mm. A significant marginal bone loss was observed after 10-years follow-up (2.5 mm). Binary logistic regression analysis showed significant association between smoke and both marginal bone loss and local biological complications. Lastly, a significant association was observed between bruxism and mechanical complications. (4) Conclusions. The high implant and prosthesis survival rate and the moderate incidence of biological and mechanical complications observed in present investigation can be associated to several factors such as high implant primary stability, prosthetic design, and control of the occlusal forces.

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Massive Bone Allograft: A Salvage Procedure for Complex Bone Loss Due to High-Velocity Missiles—A Long-term Follow-up

Military Medicine ◽

10.1093/milmed/155.7.316 ◽

1990 ◽

Vol 155 (7) ◽

pp. 316-318 ◽

Cited By ~ 2

Author(s):

M. Salai ◽

S. Volks ◽

A. Blankstein ◽

A. Chechik ◽

Y. Amit ◽

...

Keyword(s):

Bone Loss ◽

High Velocity ◽

Bone Allograft ◽

Salvage Procedure ◽

Long Term Follow Up ◽

Massive Bone Allograft ◽

Massive Bone

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Long-Term Evaluation of Autogenous Demineralized Dentin Matrix: A Retrospective 7-Year Clinical Study

10.20944/preprints202002.0010.v1 ◽

2020 ◽

Author(s):

Yonsoo Shin ◽

Young-Kyun Kim ◽

In-Woong Um

Keyword(s):

Bone Loss ◽

Bone Graft ◽

Bone Grafting ◽

Marginal Bone Loss ◽

Ridge Augmentation ◽

Dentin Matrix ◽

Demineralized Dentin Matrix ◽

Demineralized Dentin

Autogenous demineralized dentin matrix (ADDM), derived from human extracted tooth, is commonly used as a bone-graft substitute to reconstruct alveolar defects when placing dental implants. The purpose of this retrospective study is to examine efficacy of ADDM in terms of surgical complications and marginal bone resorption by analyzing the medical records and radiographs of patients who received ADDM graft from 2008 to 2011 in our institute. Occurrence of complications, marginal bone loss around implants were investigated with regard to the type of defect, location of bone grafting, and types of bone graft techniques. ADDM-based bone grafting was performed on 221 sites in 82 patients and 208 implants were placed afterwards: The percentage of complications after bone grafting was 15.84%, and the implant survival rate was 95.19%. All complications were resolved with conventional treatment except for the 10 cases of osseointegration failure. The average marginal bone loss was 0.31 mm at the last examination after the average follow-up period of 7.2 years. Within the limitation of this study, the results of long-term follow-up are consistent with the short-term results of relevant studies. ADDM can produce promising clinical outcomes when used for alveolar ridge augmentation around implants.

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Therapy and prevention for mental health: What if mental diseases are mostly not brain disorders?

Behavioral and Brain Sciences ◽

10.1017/s0140525x1800105x ◽

2019 ◽

Vol 42 ◽

Cited By ~ 2

Author(s):

John P. A. Ioannidis

Keyword(s):

Mental Health ◽

Mental Disease ◽

Brain Disorders ◽

Social Stressors ◽

Labor Education ◽

Mental Diseases ◽

Long Term Follow Up ◽

Political Decisions

AbstractNeurobiology-based interventions for mental diseases and searches for useful biomarkers of treatment response have largely failed. Clinical trials should assess interventions related to environmental and social stressors, with long-term follow-up; social rather than biological endpoints; personalized outcomes; and suitable cluster, adaptive, and n-of-1 designs. Labor, education, financial, and other social/political decisions should be evaluated for their impacts on mental disease.

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